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Processing-Dependent Broadband Dielectric Properties of KTaO3 Ceramics, Films and KTa0.6Nb0.4O3 Films

Author(s): Sebastjan Glinšek (Author), Marija Kosec (Supervisor), Zdravko Kutnjak (Co-Supervisor)

Year: 2012

Type: Doctoral dissertation

KTaO3 belongs to the group of incipient ferroelectrics, which are materials important from the fundamental, as well as from the applications, point of view. It is well known in its single-crystal form; however, the processing of technologically interesting ceramics and thin films is a challenging task and knowledge of their …

Development of silicon carbide based implants with improved biocompatibility and mechanical properties

Author(s): Katarina Rade (Author), Saša Novak Krmpotič (Supervisor), Spomenka Kobe (Co-Supervisor)

Year: 2012

Type: Doctoral dissertation

With emerging need for orthopaedic implants and prolonged exposure of organism to implants also problems connected to elution of metal ions that in some cases cause adverse reactions in the human body, emerge. The main aim of our work was therefore to investigate the potential of silicon carbide (SiC) to …

Magnetically oriented films of barium ferrite

Author(s): Simona Ovtar (Author), Darja Lisjak (Supervisor)

Year: 2012

Type: Doctoral dissertation

This work had three aims. In the first part the influences of the sizes of the particles of barium ferrite (BaM) and their magnetic properties on the stability of the suspension were investigated. In second part the deposits were prepared by electrophoretic deposition (EFN) and the influence of particle size, …

Innovative electroconductive ceramic composites based on Si3N4

Author(s): Aljoša Maglica (Author), Tomaž Kosmač (Supervisor), Kristoffer Krnel (Co-Supervisor)

Year: 2011

Type: Doctoral dissertation

This thesis describes an investigation of electrically conductive composites based on Si3N4 with dispersed TiN or ZrN particles fabricated by an in-situ composite method. The influence of the amount of conductive phase of the Si3N4/TiN and Si3N4/ZrN composites on the density, the flexural strength and the electrical conductivity were evaluated. …

High-alumina porcelain with improved mechanical and thermal properties

Author(s): Martina Oberžan (Author), Marija Kosec (Supervisor), Janez Holc (Co-Supervisor)

Year: 2009

Type: Doctoral dissertation

The study presents the influence of increasing the amount of β-spodumene (LiAlSi2O6) as Li2O-content flux on phase composition, microstructural evolution and physical properties of high alumina porcelain material containing ~61% of Al2O3. New porcelain compositions based on clays and high amount of calcined alumina were developed with the introduction of …